Product Description
Simpson Strong-Drive SDCF TIMBER-CF Screw - 0.390 in. x 15 3/4 in., T50, E-Coat by Simpson Strong-Tie is a heavy-duty structural fastener engineered for cross-laminated timber (CLT), mass timber construction, glulam assemblies, and general interior wood-to-wood applications. The redesigned SDCF TIMBER-CF screw delivers uncompromised strength in demanding timber framing, beam reinforcement, and engineered wood fastening, combining a fully threaded shank for superior withdrawal resistance with a SawTooth point that starts fast and drives easily without predrilling in most applications. The black e-coat electrocoating finish enhances aesthetics while providing a construction-durable, nonmetallic layer of corrosion resistance suited to interior dry-service environments.
Key Features
- Flat Head with Underhead Nibs - enables clean countersinking and a flush finish, resulting in a professional surface appearance on CLT panels, glulam beams, and mass timber assemblies
- Heavy-Duty, Fully-Threaded Shank (0.290 in. shank diameter, 15 1/4 in. thread length) - maximizes withdrawal resistance along the entire fastener length, keeping joints tight under load in structural timber applications
- SawTooth Point - promotes fast starts and reduced installation torque, eliminating the need for predrilling in most applications and speeding up heavy timber and mass timber workflows
- Black E-Coat Electrocoating Finish - provides a nonmetallic, construction-durable coating that resists corrosion in interior dry-service conditions while contributing to a clean, finished appearance
- Deep T50 6-Lobe Recess Drive - delivers a secure, slip-resistant connection between the bit and screw head, reducing cam-out and improving driving control during installation
- Optimized Hardness Profile - works together with the e-coat finish to mitigate the risk of brittle fracture, supporting reliable long-term structural performance
- Compliant with CSA O86:24 Hydrogen Embrittlement Requirements - meets recognized North American timber engineering standards, giving engineers and builders confidence in code-compliant installations
Why This Product
- Designed specifically for mass timber and CLT construction - the SDCF TIMBER-CF screw is purpose-built for cross-laminated timber, glulam, and engineered wood assemblies where standard fasteners may lack the length, thread engagement, or strength needed for structural performance
- Eliminates predrilling in most applications - the SawTooth point reduces installation torque and bores its own entry path, saving time and labor on heavy timber framing, beam reinforcement, and multi-ply engineered wood fastening
- Supports both wood-to-wood and wood-to-steel connections - the approved applications include fastening wood to steel as well as stud-to-plate, floor-to-floor, and wall-to-wall assemblies, making this a versatile structural screw across a wide range of interior framing scenarios
- E-coat finish reduces brittle fracture risk - the black electrocoating finish and optimized hardness profile address a key concern in long structural screws, giving installers confidence in joint integrity over the life of the structure
Specifications
- Brand: Simpson Strong-Tie
- Product Name: Strong-Drive SDCF TIMBER-CF Screw
- Length: 15 3/4 in.
- Thread Length: 15 1/4 in.
- Shank Diameter: 0.290 in.
- Head Diameter: 0.725 in.
- Head Type: Flat Head with Nibs
- Drive Type: T50 6-Lobe
- Point Type: SawTooth Point
- Coating: E-coat Electrocoating
- Finish: E-coat Electrocoating
- Color: Black
Available Pack Options
- SDCF10X400-R25: 25 Pk - includes T50, 6-lobe driver bit (replacement bit: BIT50T-2-R1)
- SDCF10X400: 100 Pk - includes T50, 6-lobe driver bit (replacement bit: BIT50T-2-R1)
Approved Applications
- Fastening Wood-to-Wood
- General Interior
- Fastening Support Beams
- Heavy Timber
- Mass Timber / Cross-Laminated Timber
- Engineered Wood - Multi-Ply Fastening
- Fastening Simpson Strong-Tie Connectors
- Engineered Wood
- Fastening Wood-to-Steel
- Timber Framing
- Surface Splines
- Beam Reinforcement
- Fastening Wall-to-Wall
- Glulam
- Fastening Butt Joists
- Fastening Floor-to-Floor
- Fastening Stud-to-Plate
What's Included
- T50, 6-lobe driver bit (replacement bit: BIT50T-2-R1)
Reviews
FAQs
Standard Shipping is free on most orders over $50 within the contiguous US. If the order is under $50.00, the shipping is $9.99 set fee for shipping within the contiguous US.
Most of our products will ship within 1 to 3 Business Days. Some Special order products will ship within 2 to 5 Business Days. Preorders will be shipped to you on a first come first serve basis as soon as available from the manufacturer. Items that are "Made-to-Order" (Custom order products) will be shipped when fabrication is completed, shipping and delivery times will vary and depend on manufacturing.
Products that are shipped directly from the manufacturer will have processing and fulfilment times subject to manufacturer availability.
Preorders are shipped on a first come first serve basis as soon as available from the manufacturer, the sooner you place your Preorder the sooner your order will ship.
Freight shipping Policy:
Orders/Items too large or heavy may require special handling/Shipping and may require to be sent by truck. Someone must be present to accept truck deliveries. Standard truck delivery is to a dock facility designed to receive freight. You will be notified within 24 hours of ordering to confirm delivery. Lift gates for deliveries are available for an additional fee.
We offer Financing options through Clicklease
Please email your Return request to info@FactoryDirectSupplyOnline.com
Include the order number and the reason for your return.
All returns, regardless of their categorization, must include all original parts, be in their original packaging, and in the condition in which they were received. You may not qualify to receive a refund If the returned item is used, damaged, missing any parts, or is damaged during return shipping.
Checkout our complete Return policy
You can contact us through our contact page! We will be happy to assist you.